本节分享在centos6.4系统中，安装与配置nagios3.5.0的方法。
一，安装环境的配置
1，关闭防火墙
复制代码 代码示例:
[root@Nagios ~]# service
iptables stop
iptables: Flushing firewall rules: [ OK ]
iptables: Setting chains to policy ACCEPT: filter [ OK ]
iptables: Unloading modules: [ OK ]
[root@Nagios ~]# chkconfig iptables off
2，关闭SElinux
如果未关闭selinux，则可能在安装完成后，会出现Internal Server Error错误
编辑/etc/selinux/config
复制代码 代码示例:
[root@Nagios ~]# vim /etc/selinux/config
将SELINUX=
disabled
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
# enforcing - SELinux security policy is enforced.
# permissive - SELinux prints warnings instead of enforcing.
# disabled - No SELinux policy is loaded.
SELINUX=disabled
# SELINUXTYPE= can take one of these two values:
# targeted - Targeted processes are protected,
# mls - Multi Level Security protection.
SELINUXTYPE=targeted
3，修改hosts文件
复制代码 代码示例:
已知我们这台机器的主机名为Nagios,则修改/etc/hosts
127.0.0.1 Nagios localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
添加上面红色部分即可，否则启动apache服务的时候可能出现
Starting httpd: httpd: apr_sockaddr_info_get() failed for Nagios
做完以上3个步骤后，需要重启服务器。
二，软件的准备
1，安装必要的软件
复制代码 代码示例:
[root@Nagios ~]#
yum -y install wget make openssl openssl-devel httpd php gcc glibc
> glibc-common gd gd-devel net-snmp
mysql
> mysql-server mysql-devel php-mysql perl perl-devel gnutls gnutls-devel
2，MySQL的配置（此步可省略）
虽然现在还并未使用MySQL,但是在以后的配置需要用到。
首先启动MySQL服务器
复制代码 代码示例:
[root@Nagios ~]# service mysqld start
接着设置更改MySQL root账户的密码
复制代码 代码示例:
[root@Nagios ~]# mysqladmin -u root password 123456
三，软件的安装
1，Nagios账户及组的添加
复制代码 代码示例:
[root@Nagios ~]# useradd nagios
[root@Nagios ~]# groupadd nagcmd
[root@Nagios ~]# usermod -a -G nagcmd nagios
[root@Nagios ~]# usermod -a -G nagcmd apache
2，软件的下载
复制代码 代码示例:
Nagios软件的下载
[root@Nagios ~]# wget http://prdownloads.sourceforge.net/sourceforge/nagios/nagios-3.5.0.tar.gz
[root@Nagios ~]# wget http://prdownloads.sourceforge.net/sourceforge/nagiosplug/nagios-plugins-1.4.16.tar.gz
3，Nagios软件的解压
复制代码 代码示例:
[root@Nagios ~]# tar zxvf nagios-3.5.0.tar.gz
[root@Nagios ~]# tar zxvf nagios-plugins-1.4.16.tar.gz
4，Nagios的编译与安装
1）、首先进入Nagios解压后所在的目录
复制代码 代码示例:
[root@Nagios ~]# cd nagios
[root@Nagios nagios]# ./configure --with-command-group=nagcmd
[root@Nagios nagios]# make all
[root@Nagios nagios]# make install
[root@Nagios nagios]# make install-init
[root@Nagios nagios]# make install-config
[root@Nagios nagios]# make install-commandmode
[root@Nagios nagios]# make install-webconf
[root@Nagios nagios]# cp -R contrib/eventhandlers/ /usr/local/nagios/libexec/
[root@Nagios nagios]# chown -R nagios:nagios /usr/local/nagios/libexec/eventhandlers/
2）、测试nagios的配置文件
复制代码 代码示例:
[root@Nagios nagios]# /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
如果最后出现
Total Warnings: 0
Total Errors: 0
Things look okay - No serious problems were detected during the pre-flight check
就证明nagios配置无误可正常启动！
3）、启动Nagios服务：
复制代码 代码示例:
[root@Nagios nagios]# service nagios start
Starting nagios: done.
启动httpd服务：
复制代码 代码示例:
[root@Nagios nagios]# service httpd start
Starting httpd: httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName [ OK ]
4）、添加访问WEB服务的账户及密码
复制代码 代码示例:
[root@Nagios nagios]# htpasswd -c /usr/local/nagios/etc/htpasswd.users admin
New password:
Re-type new password:
Adding password for user admin
此时已添加好了访问web网站的用户。
5，Nagios plugin的安装
首先，进入Nagios plugin解压目录
复制代码 代码示例:
[root@Nagios nagios]# cd ../nagios-plugins-1.4.16
进行编译：
复制代码 代码示例:
[root@Nagios nagios-plugins-1.4.16]# ./configure --with-nagios-user=nagios --with-nagios-group=nagios --enable-extra-opts --enable-perl-modules --enable-libtap
编译成功后，会出现如下信息：
--with-apt-get-command:
--with-ping6-command: /bin/ping6 -n -U -w %d -c %d %s
--with-ping-command: /bin/ping -n -U -w %d -c %d %s
--with-ipv6: yes
--with-mysql: /usr/bin/mysql_config
--with-openssl: yes
--with-gnutls: no
--enable-extra-opts: yes
--with-perl: /usr/bin/perl
--enable-perl-modules: yes
--with-cgiurl: /nagios/cgi-bin
--with-trusted-path: /bin:/sbin:/usr/bin:/usr/sbin
--enable-libtap: yes
#-----插件的安装
复制代码 代码示例:
[root@Nagios nagios-plugins-1.4.16]# make
[root@Nagios nagios-plugins-1.4.16]# make install
将nagios及httpd加入启动项，并自动启动：
复制代码 代码示例:
[root@Nagios nagios-plugins-1.4.16]# chkconfig --add nagios
[root@Nagios nagios-plugins-1.4.16]# chkconfig --level 35 nagios on
[root@Nagios nagios-plugins-1.4.16]# chkconfig --add httpd
[root@Nagios nagios-plugins-1.4.16]# chkconfig --level 35 httpd on
